10 Incredible Underground Lakes and Rivers [pics] via @rjfrasca

Reed Flute Cave in Guilin, China was discovered during the Tang Dynasty almost 1,300 years ago. Far below the Earth’s surface, where the sun rarely penetrates, is a world of twinkling glow worms, precious gems and limestone caves and mountains, a land inhabited by nature alone. Within this world are visions to rival many landscapes decorating our horizon; lakes lie still and calm, great networks of caves know no borders, and rivers and rivulets carve an ever-evolving terrain. We invite you to explore this remarkable subterranean domain through these incredible images we’ve complied for your viewing pleasure. 2. Cheddar Gorge Cheddar Gorge is Britain’s biggest canyon and is found within the Cheddar Caves, where the UK’s oldest complete human skeleton was found in 1903. Known as the Cheddar Man, the remains were estimated to be 9,000 years old. 3. Hamilton Pool Hamilton Pool...